Instagram has web profiles? Yeah, well, Twitter's about to give all of its users a bit more of a face online as well. While select users have had access to revamped profiles for a few months, Twitter confirmed today that all of its users would be allowed into the party starting December 12th. The main addition here is the use of a header photo, and if you've got any questions on the hows and whys, there's a cute video just after the break to explain. Pick carefully, okay?